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Sinister Diesel Cold Air Intake for 2004.5-2005 GM Duramax LLY 6.6L (Dry Filter)
SKU:
SD-CAI-LLY-DRY
- $519.99
- $519.99
- Unit price
- per
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⚠️ High Demand – Restock in Progress
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The Sinister Diesel Cold Air Intake for the 2004.5–2005 6.6L Duramax LLY is designed to improve airflow, efficiency, and overall engine performance by eliminating the restrictions found in the factory intake system.
Using smooth mandrel-bent aluminum tubing and a high-flow filter, this intake allows your engine to pull in more air with less restriction—resulting in improved throttle response, more consistent power delivery, and increased turbo efficiency under load.
This open air intake continues to utilize the factory-designed air path, pulling in fresh, clean, cooler air from outside the engine bay. By maintaining that factory airflow path while increasing overall air volume, the system maximizes efficiency without relying on restrictive plastic housings. In real-world conditions, this design has shown intake air temperatures at or below factory levels due to improved airflow and proper use of the truck’s original air channels.
Built from durable 6061 aluminum and finished in Sinister Blue powder coat, this intake is designed to handle daily driving, towing, and performance use while adding a clean, aggressive look under the hood.
Installation is quick and straightforward with a true drop-in design using basic hand tools.
Features:
- Increased Airflow Efficiency – Mandrel-bent aluminum tubing reduces restriction and improves engine breathing
- Oversized High-Flow Filter – Designed for maximum airflow and effective filtration
- Improved Throttle Response – Smoother acceleration and faster turbo spool
- 6061 Aluminum Construction – Built for strength, durability, and long-term performance
- Sinister Blue Powder Coat – Corrosion-resistant finish with a bold under-hood appearance
- Easy Installation – Direct-fit design with all required hardware included
Included:
- (1) CNC Mandrel-Bent Aluminum Intake Tube
- (1) Oversized High-Flow Air Filter
- Installation Hardware
Fitment:
- 2004.5-2005 Chevy/GMC 2500HD 6.6L Duramax
- 2004.5-2005 Chevy/GMC 3500HD 6.6L Duramax
Note:
- This product is not currently for sale in California (CARB EO pending).
- WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
Product Specs
SKU:
SD-CAI-LLY-DRY
Brand:
Sinister Diesel
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